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Chemical Name: 1,2-Propylene Glycol Carbonate
Synonyms: 4-Methyl-1,3-dioxolan-2-one, Propylene carbonate
Molecular Formula: C4H6O3
CAS Number: 108-32-7
Common Applications: Solvent in coatings, lithium battery electrolyte, chemical intermediate, degreasing agent, and plasticizer. The chemical profile shows up often in labs, factories, paint shops, and sometimes in electronics assembly. Understanding its presence up close goes a long way toward proactive safety at work or home.
Physical State: Clear, colorless liquid
Odor: Slight, often compared to ether
Main Hazards: Skin and eye irritation, respiratory discomfort on heavy exposure. Inhalation of concentrated vapor can bring about headaches or mild dizziness. Not a routine flammable solvent, but decent ventilation is always important. Exposure in confined spaces raises the risk for mild central nervous system effects. Many overlook splashes, but eyes and hands usually take the first hit. Careful handling beats any workplace regret stories.
Main Ingredient: 1,2-Propylene Glycol Carbonate; typical purity above 99%.
Impurities: May include trace elements of propylene glycol and water, well below a percent combined, and often not listed as hazardous.
Concentration: Used mostly at or near pure grade in industrial contexts.
Eye Contact: Rinse with plenty of water for several minutes. Remove contact lenses if worn and easy to do. Don't rub — let water carry it away.
Skin Contact: Wash with soap and water. Take off any contaminated clothing. Sensitization seems rare, but dry, cracked skin sometimes develops with repeated touches.
Inhalation: Move to fresh air if vapors cause headaches or nausea. Sit down, relax, and seek help if breathing trouble lingers.
Ingestion: Rinse mouth, avoid inducing vomiting, call for medical evaluation. Low oral toxicity has been noted, but precaution matters, especially with kids around. It pays to have a first aid routine near any chemical shelf, and everybody benefits from regular training.
Extinguishing Media: Water spray, dry powder, foam, carbon dioxide.
Combustion Products: Carbon monoxide, carbon dioxide, and small chances of other organics if burning with plastics.
Hazards on Fire: Vapor can travel invisible paths. Basic firefighting gear handles smoke, but full-face shield and gloves always matter more during real heat. Runoff may need to be contained.
Advice for Firefighters: Stay upwind, limit entry unless trained, and rely on breathing equipment. Small fires disappear quickly with a clear extinguisher, but large ones need trained response teams.
Personal Precautions: Put on chemical-resistant gloves and goggles. Keep upwind to avoid breathing vapors. Block off foot traffic and keep non-essential people outside the spill area.
Environmental Measures: Prevent from flowing into drains and waterways. Scoop up with absorbent material — sand or inert granules help in a pinch. Collect in suitable containers for disposal.
Cleanup: Wash down traces with water and detergent. Let the air refresh the area fully. Each cleanup has its quirks, but speed paired with calm is the best approach, especially where spills risk indoor air or floor drainage.
Handling: No eating, drinking, or smoking around the product. Only trained hands handle bulk units. Every spill, even drops, should get wiped before shoes track it elsewhere. Store chemicals apart from food and out of children’s reach. Hygiene beats expensive mishaps.
Storage: Keep in tightly shut bottles, away from sunlight, in places with steady, cool air flow. Use original containers when possible. Strong oxidizers and acids react poorly nearby. Storage areas should resist leaks and allow quick cleaning access. Workers and students who take a minute to check labels double their safety margin every shift.
Exposure Limits: No specific legal exposure limit found in major jurisdictions, but a precautionary approach still makes sense.
Engineering Controls: Use fume hoods or well-ventilated areas. Ducted exhausts work better in larger labs.
Personal Protective Equipment: Nitrile gloves, well-fitted goggles, and lab coats keep splashes at arm’s length. Workers in spraying applications sometimes wear respirators, especially in crowded factories.
Hygiene Measures: Wash hands after use, and never reuse chemical-stained gloves. Shared workspaces benefit from routine safety talks to keep standards sharp.
Appearance: Clear, colorless liquid
Odor Threshold: Difficult to smell in dilute settings
pH: Not available; neutral in most cases
Melting Point: Before freezing, it sits at about -55°C
Boiling Point: Roughly 240°C
Flash Point: Around 132°C (closed cup)
Vapor Pressure: Low at room temperature
Density: About 1.2 g/cm³
Solubility: Mixes well with water and common solvents like acetone and methanol.
Viscosity: Syrupy compared to water, great for dissolving some tough resins.
These numbers paint a clear picture during chemical selection and transport.
Stability: Stable under common conditions. Heating above 100°C softens the rules.
Reactivity: Reacts with strong acids, oxidizers, and bases. Aluminum and magnesium sometimes corrode on long contact.
Decomposition: High temperatures bring out carbon oxides. Stable storage means less risk of container bulge or chemical odor surprises.
Routes of Exposure: Eyes, skin, inhalation, ingestion.
Short-term Effects: Mild irritant; redness or stinging at contact sites. Swallowing rarely causes symptoms unless large amounts get in.
Long-term Exposure: Chronic issues look unlikely from measured use. Repeated skin contact sometimes chaps hands.
Evidence from Studies: Animal and lab data suggest low toxicity, but regular safety reviews remain smart practice where people change and process quirks surface.
Building strong habits beats chasing statistics for rare reactions.
Aquatic Toxicity: Not expected to harm fish or plants at normal release levels.
Persistence/Degradability: Breaks down in nature via bacteria and sunlight over weeks or months.
Bioaccumulation: Not seen building up in wildlife.
Laws push for spill prevention, but every small leak adds up downstream, whether in city drains or backyard soil.
Recommended Disposal: Take waste to registered chemical dumps. Never pour down the drain unless advised by municipal guidelines.
Reuse/Recycle: Uncontaminated leftovers sometimes return to the process line. Shared labs coordinate disposal so nothing goes missing.
Container Handling: Rinse well and dispose of debris through hazardous waste services. Unlabeled containers leave everyone guessing, so sharp labeling beats confusion every day.
UN Number: Transported as a non-regulated liquid in many countries when under bulk limits.
Proper Shipping Name: Propylene carbonate
Transport Hazards: Spills slip easily on floors; containers can leak after falls. Packing with secure lids and upright boxes keeps trucks and vans clean and safe.
Special Precautions: Drivers take extra care on hot days to avoid ruptures. Inspect seals before loading, not after, because discovery at a distant warehouse means lost time and more trouble.
Global Status: Accepted in the US, EU, and much of Asia for industrial and consumer use.
Restrictions: Low hazard ranking under GHS, but always check for updates after new studies arrive.
Reporting Requirements: Large users file local environment and safety paperwork, especially near water treatment or high-traffic workplaces. Periodic site checks keep health and fire inspectors happy.
